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From: Andreas Schwab <schwab@linux-m68k.org>
To: "Gerd Möllmann" <gerd.moellmann@gmail.com>
Cc: Po Lu <luangruo@yahoo.com>,
	56553@debbugs.gnu.org, Eli Zaretskii <eliz@gnu.org>
Subject: bug#56553: 29.0.50; ASAN error with fringe bitmaps on NS
Date: Fri, 15 Jul 2022 16:46:19 +0200	[thread overview]
Message-ID: <87ilny4eo4.fsf@igel.home> (raw)
In-Reply-To: <FC63D0B4-DDA2-4F29-9B0B-A4ED78DF8D8F@gmail.com> ("Gerd Möllmann"'s message of "Fri, 15 Jul 2022 11:14:02 +0200")

Does this work?

diff --git a/src/nsterm.m b/src/nsterm.m
index 8e0c4b84f0..30768baced 100644
--- a/src/nsterm.m
+++ b/src/nsterm.m
@@ -2900,10 +2900,7 @@ Hide the window (X11 semantics)
   for (int y = 0 ; y < h ; y++)
     for (int x = 0 ; x < w ; x++)
       {
-        /* XBM rows are always round numbers of bytes, with any unused
-           bits ignored.  */
-        int byte = y * (w/8 + (w%8 ? 1 : 0)) + x/8;
-        bool bit = bits[byte] & (0x80 >> x%8);
+        bool bit = bits[y] & (1 << (w - x - 1));
         if (bit)
           [p appendBezierPathWithRect:NSMakeRect (x, y, 1, 1)];
       }

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
"And now for something completely different."





  parent reply	other threads:[~2022-07-15 14:46 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-14 13:03 bug#56553: 29.0.50; ASAN error with fringe bitmaps on NS Gerd Möllmann
2022-07-14 13:56 ` Eli Zaretskii
2022-07-14 14:18   ` Gerd Möllmann
2022-07-14 14:34     ` Gerd Möllmann
2022-07-14 16:55       ` Eli Zaretskii
2022-07-14 18:25         ` Gerd Möllmann
2022-07-15  8:23           ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-15  9:14             ` Gerd Möllmann
2022-07-15 10:37               ` Eli Zaretskii
2022-07-15 13:55                 ` Gerd Möllmann
2022-07-15 13:57                   ` Robert Pluim
2022-07-15 14:26                     ` Eli Zaretskii
2022-07-15 14:46               ` Andreas Schwab [this message]
2022-07-15 15:10                 ` Gerd Möllmann
2022-07-15 15:16                   ` Gerd Möllmann
2022-07-16  7:16                     ` Gerd Möllmann
2022-07-15 15:32                   ` Andreas Schwab
2022-07-15 10:35             ` Eli Zaretskii
2022-07-15 10:37               ` Gerd Möllmann

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